Biosensor is used to measure?

1. Biosensor is used to measure? 

A. Blood glucose level

B. The body pH value
C. Amount of hemoglobin
D. Salinity in Urine

2. Einstein’s famous equation which states that mass and energy are interchangeable is? 

A. E = mc2

B. E = cm2
C. M = ec2
D. M = ce2

3. The SI unit of electric current is? 

A. Coloumb

B. Ampere

C. Volt
D. Watt